<?php
/**
 * PHPExcel
 *
 * Copyright (c) 2006 - 2010 PHPExcel
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 *
 * @category   PHPExcel
 * @package    PHPExcel_Cell
 * @copyright  Copyright (c) 2006 - 2010 PHPExcel (http://www.codeplex.com/PHPExcel)
 * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
 * @version    1.7.2, 2010-01-11
 */


/** PHPExcel root directory */
if (!defined('PHPEXCEL_ROOT')) {
    /**
     * @ignore
     */
    define('PHPEXCEL_ROOT', dirname(__FILE__) . '/../../');
}

/** PHPExcel_Cell */
require_once PHPEXCEL_ROOT . 'PHPExcel/Cell.php';

/** PHPExcel_Cell_IValueBinder */
require_once PHPEXCEL_ROOT . 'PHPExcel/Cell/IValueBinder.php';

/** PHPExcel_Cell_DefaultValueBinder */
require_once PHPEXCEL_ROOT . 'PHPExcel/Cell/DefaultValueBinder.php';

/** PHPExcel_Style_NumberFormat */
require_once PHPEXCEL_ROOT . 'PHPExcel/Style/NumberFormat.php';

/** PHPExcel_Shared_Date */
require_once PHPEXCEL_ROOT . 'PHPExcel/Shared/Date.php';

/** PHPExcel_Shared_String */
require_once PHPEXCEL_ROOT . 'PHPExcel/Shared/String.php';


/**
 * PHPExcel_Cell_AdvancedValueBinder
 *
 * @category   PHPExcel
 * @package    PHPExcel_Cell
 * @copyright  Copyright (c) 2006 - 2010 PHPExcel (http://www.codeplex.com/PHPExcel)
 */
class PHPExcel_Cell_AdvancedValueBinder extends PHPExcel_Cell_DefaultValueBinder implements PHPExcel_Cell_IValueBinder
{
    /**
     * Bind value to a cell
     *
     * @param PHPExcel_Cell $cell Cell to bind value to
     * @param mixed $value Value to bind in cell
     * @return boolean
     */
    public function bindValue(PHPExcel_Cell $cell, $value = null)
    {
        // sanitize UTF-8 strings
        if (is_string($value)) {
            $value = PHPExcel_Shared_String::SanitizeUTF8($value);
        }

        // Find out data type
        $dataType = parent::dataTypeForValue($value);

        // Style logic - strings
        if ($dataType === PHPExcel_Cell_DataType::TYPE_STRING && !$value instanceof PHPExcel_RichText) {
            // Check for percentage
            if (preg_match('/^\-?[0-9]*\.?[0-9]*\s?\%$/', $value)) {
                // Convert value to number
                $cell->setValueExplicit((float)str_replace('%', '', $value) / 100, PHPExcel_Cell_DataType::TYPE_NUMERIC);

                // Set style
                $cell->getParent()->getStyle($cell->getCoordinate())->getNumberFormat()->setFormatCode(PHPExcel_Style_NumberFormat::FORMAT_PERCENTAGE);

                return true;
            }

            // Check for time e.g. '9:45', '09:45'
            if (preg_match('/^(\d|[0-1]\d|2[0-3]):[0-5]\d$/', $value)) {
                list($h, $m) = explode(':', $value);
                $days = $h / 24 + $m / 1440;

                // Convert value to number
                $cell->setValueExplicit($days, PHPExcel_Cell_DataType::TYPE_NUMERIC);

                // Set style
                $cell->getParent()->getStyle($cell->getCoordinate())->getNumberFormat()->setFormatCode(PHPExcel_Style_NumberFormat::FORMAT_DATE_TIME3);

                return true;
            }

            // Check for date
            if (strtotime($value) !== false) {
                // make sure we have UTC for the sake of strtotime
                $saveTimeZone = date_default_timezone_get();
                date_default_timezone_set('UTC');

                // Convert value to Excel date
                $cell->setValueExplicit(PHPExcel_Shared_Date::PHPToExcel(strtotime($value)), PHPExcel_Cell_DataType::TYPE_NUMERIC);

                // Set style
                $cell->getParent()->getStyle($cell->getCoordinate())->getNumberFormat()->setFormatCode(PHPExcel_Style_NumberFormat::FORMAT_DATE_YYYYMMDD2);

                // restore original value for timezone
                date_default_timezone_set($saveTimeZone);

                return true;
            }
        }

        // Not bound yet? Use parent...
        return parent::bindValue($cell, $value);
    }
}
